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[fog-ee, faw-gee] /ˈfɒg i, ˈfɔ gi/
adjective, foggier, foggiest.
thick with or having much fog; misty:
a foggy valley; a foggy spring day.
covered or enveloped as if with fog:
a foggy mirror.
blurred or obscured as if by fog; not clear; vague:
I haven't the foggiest notion of where she went.
bewildered; perplexed.
Photography. affected by fog.
Origin of foggy
1520-30; fog2 + -y1; orig. meaning marshy, thick, murky
Related forms
foggily, adverb
fogginess, noun
unfoggy, adjective
Can be confused
foggy, fogy.
3. fuzzy, hazy, dim, murky, muddled. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for foggiest
Contemporary Examples
Historical Examples
  • Have you got the foggiest idea of what in hell she's yammering about?

    Masters of Space Edward Elmer Smith
  • Should he tell her that he was not her husband, that he didnt have the foggiest notion of who he was?

    The Sex Life of the Gods Michael Knerr
  • "The natives haven't the foggiest idea of hygiene," said the doctor finally.

    Banked Fires

    E. W. (Ethel Winifred) Savi
  • And I went there without the foggiest idea of indulging in the tender pash.

    Right Ho, Jeeves P. G. Wodehouse
  • When "Dr. Blitz" and his "sons" went ashore it was the foggiest kind of a Christmas morning.

  • Fanny had the foggiest idea of what it was, though she noticed that it roughened his hands and stained them.

    The Magnificent Ambersons Booth Tarkington
  • McGee put the question to a dozen officers, and not one of them had the foggiest notion of where he was going.

    Aces Up Covington Clarke
  • The history of Ireland from the foggiest period of the past is a tale of continuous warfare.

    One Irish Summer William Eleroy Curtis
British Dictionary definitions for foggiest


adjective -gier, -giest
thick with fog
obscure or confused
another word for fogged
not the foggiest, not the foggiest idea, not the foggiest notion, no idea whatsoever: I haven't the foggiest
Derived Forms
foggily, adverb
fogginess, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for foggiest



1540s, perhaps from a Scandinavian source, or formed from fog (n.1) + -y (2). Foggy Bottom "U.S. Department of State," from the name of a marshy region of Washington, D.C., where many federal buildings are (also with a suggestion of political murkiness) popularized 1947 by James Reston in "New York Times," but he said it had been used earlier by Edward Folliard of "The Washington Post."

Online Etymology Dictionary, © 2010 Douglas Harper
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